Tool-holder for lathes



' (No Model.) n

O. H. KELLE'Y.

TOOL HOLDER FOR LATHBS.

No. 332,806. Patented Dec. 22, 1885'.

UNITED STATES VPATENT Ormes.

CHARLES H. KELLEY, OF REVERE, ASSIGNOR OF ONE-HALF TO FRANCIS C.PERKINS, OF SOMERVILLE, MASSACHUSETTS.

TOOL-HOLDER FOR LATHES.

SPECIFICATION forming part of Letters Patent No. 332,806, dated December22, 1885.

Application filed October 19, 1885. Serial No.180,323. (No model.)

lTo all whom it may concern,.-

head adapted to be arranged in suitable position upon the lathe, and aseries of tool-carriers movable upon the said head, and independentlyadjustable in the same path that each may be secured in operativeposition in respect to the spindle of the lathe.

My invention may be carried out in appliances constructed `in differentways, some of which are illustrated in the accompanying drawings, inwhich- Figure l is a plan view of my tool-holder, showing the sameapplied to the tail-stock of a lathe. Fig. 2 is a sectional plan of aholder. Fig. 3 is a central section of Fig. 1. Fig. 4 is a plan, andFig. 5 is an elevation, and Fig. 7 is a sectional plan, illustratingdifferent forms of holders embodying my invention. Fig. 6 is a sectionshowing a modiiied form of connection between the head and tool-carrier.

The 'holder consists, essentially, of a series of tool supports orcarriers and a head adapted to receive and guide the said supports andto hold them in available position, so that any one may be brought inline with the lathe-spindle and there secured. The head may be of anyshape adapted to guide and hold the supports, and I have showndifferentshaped heads as illustrations of some of the different forms inwhich my invention may be embodied, and the said head may be providedwith a shank adapted to the socket of the deadspindle of the tail-stockof the lathe, or it may be secured in any suitable manner upon the bedof the lathe, but in such position that any one of thetool-carriers maybe guided into line with the lathe-spindle.

In the construction shown in Figs. 1, 2, and 3, the head A consists of acurved block with a peripheral groove, x,adapted to receive a seriesofsector-like carriers,which are confined in the groove by a flange, a,so that they can only be withdrawn from the ends of the groove, and sothat they can slide freely therein to bring any one of them to theposition shown by the carrier I', Figs. 2 and 3, in which case the toolsupported by the carrier will be axially in line with the spindle of thelathe, and the head is provided with a suitable locking device, wherebythe carrier may be secured in position after adjustment.

Such a locking device may be a set-screw. (Shown in dotted lines, Fig.3.) I prefer,how ever, an automatic spring-lock. For instance, across-bar, b, is connected to two lockingpins, e e, which pass throughopenings in the upper side of the head A, and when any one ofthecarriers is in position enter sockets i in the upper face of the latter,the cross-bar being connected to a lever, G, pivoted to studs at the topof the head and acted upon by a spring, s, so as to throw down thelocking-pins as soon as the openings t' coincide with the ends thereof.By pressing on the end of the lever G the pins may be raised and thecarrier released.

The tools may be secured to the carriers in any suitable manner-forinstance, each carrier may be provided with a socket, y, adapted toreceive the butt-ends of the tools.

By the use of a head carrying a series of tool supports or carriersconfined thereto, but sliding readily thereon, and each capable of beinglocked in line with the lathespindle, I am enabled to readily bring anytool into operative position with the Work without the use of the usualexpensive turrets; and it will be seen that the number of tools for anyparticular series of operations may be readilyincreased by simplyincreasing the number of carriers.

In the construction of head shown in Figs. l, 2, and 3, thehead isprovided with a central shank, E,- which is tapering to fit the socketof the dead-spindle in the tail-stock; but this mode of attachment,while convenient, is not essential, nor is it necessary to support thehead by means of the tail-stock. For instance, the head may be astraightgrooved bar supported in a vertical position on the bed of the lathe, asshown in Fig. 5, the carriers sliding vertically.

In Fig. 4 the head is shown as curved in ICO form, but to a less degreethan the head illusl trated in Figs. 1, 2, and 3; but, instead of beingconnected to the dead-spindle, it is shown as secured to the revolvingspindle of the lathe by a set-screw, t, so as to revolve with the saidspindle, in which case, of course, the Work will be brought toward eachtool as it is brought centrally to position by the adjustment of thecarrier, as before described.

In some instances the tool-carriers may be provided With revolvingsocketed spindles K, as shown in Fig. 7, each spindle having a pinion,q, which is revolved by a toothed Wheel, o', on the spindle of the latheas it is brought above and into gear therewith, the carriers slidingadjustably in the head A, as before described,so that only the socketedspindle that is in line with the Work-holder is revolved. In such casethe Work is supported by a suitable chuck capable of adjustment to andfrom the tool. The hea-d is not necessarily grooved to support thecarriers, as each of the latter may have aT-groove adapted to a T-head,as shown in Fig. 6.

Without limiting myself to the precise construction and arrangement ofparts shown, I claim- 1. The combination, in a toolholder for lathes, ofa head and a series of sliding toolcarriers supported by the head andindependently adjustable in the same path, to bring each in axial linewith the Work, substantially as set forth.

2. Ahead adapted for attachment to alathe, in combination With a seriesof sliding toolcarriers independently movable in the same path in andsupported by the head, an a locking device, whereby each carrier may belocked in position in line with the lathe-spindle, substantially as setforth.

3. An attachment for lathes,consisting of a head supporting a series ofsliding tool-carriers, said head being provided with a shank adapted tobe connected to and supported by the tailstocl; of the lathe,substantially as described.

4. A tool-holder for lathes, consisting of a curved head supporting aseries of tool-carriers sliding independently in the same path, andprovided With a locking device and with a projectingshanlg'substantially as set forth.

In testimony whereof Ihave signed my name to this specification in thepresence of two subscribing` Witnesses.

CHARLES H. KELLEY.

Witnesses:

ORA C. MAGooN, S. H. HILL.

